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Distance covered on bike= 1000 km, Time = 5 hrs. Speed = (Distance )/Time = (1000 )/5 = 200 km/hr. Time = 4hrs, Speed of bicycle= (2 )/5 × 200 = 80 km/hr. Distance covered on bicycle= Speed × Time = 80 × 7= 560 km.
Average age of 3 children born at intervals of 2 years is 8. How old is the eldest child?
The average age of three children is 14 years. If their ages are in the ratio 1:2:3. Find the age of the youngest child.
Average age of A, B and C is 20 years. Average age of B and C was 12 years when A was born. If B is 21 years old, then, find the age of C, 6 years hence.
In a classroom, there are 24 male students and 16 female students. The male students have an average age of 16 years, while the female students average ...
The average weight of a class of 25 student is 60 KG. If X is student joined the class, than the average weight of whole class increases by (2X – 7)...
The average of six numbers is 8. When three new numbers are included in such a way that the first number is twice the second and second number is thri...
If the average of 38, 49, 42, and 'b' is 50, then find the value of '2b'.
In an examination the average marks of Rohit is 62. If he got 19 more marks in science and 26 more marks in maths then his average would have been 67. F...
In an examination, the average marks obtained by the students is 75. After correcting the quantitative mistakes, the average of 100 students is reduced...
In an examination the average marks of Rohit is 60. If he got 15 more marks in science and 21 more marks in maths then his average would have been 66. F...
